Specifications

show switchport backup
554
show switchport backup
Displays information about uplink redundancy.
Syntax
show switchport backup
Input mode
User mode and administrator mode
Parameters
None
Example
Figure 31-2 Example of displaying uplink redundancy information
> show switchport backup
Date 2010/01/08 16:48:07 UTC
Startup active port selection: primary only
Switchport backup pairs Preemption Flush
Primary Status Secondary Status Delay Limit VLAN
Port 0/1 Blocking Port 0/25 Forwarding - - 4094
*Port 0/10 Blocking ChGr 4 Forwarding 100 98 10
Port 0/11 Down Port 0/15 Down - - -
Port 0/26 Blocking ChGr 1 Forwarding 30 25 untag
ChGr 8 Blocking Port 0/24 Forwarding 300 297 100
>
Display items
Table 31-2 Display items for the uplink redundancy information
Item Meaning Displayed information
Startup active port selection Setting of the functionality that
permanently assigns the active
port at device startup
primary only: The functionality that
permanently assigns the active port at
device startup is enabled.
This item is displayed only when this
functionality is enabled.
Switchport
backup pairs
Primary The number of the primary port
or the channel group
If an asterisk (*) is displayed, the port is an
uplink port and the secondary port cannot
be used for communication because the
functionality that permanently assigns the
active port at device startup is enabled.
Status Status of the primary port Forwarding: Forwarding
Blocking: Blocking
Down: Link down
Secondary The number of the secondary
port or the channel group
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